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  3. Smoking in bed has long been the main cause of home fires. Despite a significant

Smoking in bed has long been the main cause of home fires. Despite a significant

游客2024-01-13  73
问题 Smoking in bed has long been the main cause of home fires. Despite a significant decline in cigarette smoking in the last two decades, however, there has been no comparable decline in the number of people killed in home fires. Each one of the following statements, if true over the last two decades, helps to resolve the apparent discrepancy above EXCEPT:
选项 A、Compared to other types of home fires, home fires caused by smoking in bed usually cause relatively little damage before they are extinguished.
B、Home fires caused by smoking in bed often break out after the home’s occupants have fallen asleep.
C、Smokers who smoke in bed tend to be heavy smokers who are less likely to quit smokers than are smokers who do not smoking in bed.
D、An increasing number of people have been killed in home fires that started in the kitchen.
E、Population densities have increased, with the result that one home fire can cause more deaths than in previous decades.
答案 B
解析 在房主入睡以后发生的火灾很容易引起人员死亡，因此(B)选项不能解决夺题论述中的明显分歧；(A)选项表明床上抽烟一般不引起伤亡事件，因此抽烟人数显著减少，但是死于家庭火灾的人数并没有相应地减少；(C)选项表明抽烟人数减少是由于不在床上抽烟的人不再抽烟所致，而这部分人又一般不引起家庭火灾，所以抽烟人数明显减少，死于家庭火灾的人数并没有显著减少；(D)通过他因说明了死亡人数为什么没相应减少；(E)选项表明火灾发生的次数可能随抽烟者的减少而减少，但随人员密度的增加，每次死亡的人数却增加了，所以死亡人数没有随抽烟人数的显著下降而做相应的下降。
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